This is a young ash tree. The emerald ash borer is a half-inch long; its larva eats the phloem and outer sapwood and is killing ash trees

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Wright Gwyn, program manager for the Forest Park Environmental Awareness Department, says a large portion of the city's urban forest consists of ash trees. These trees are endangered by an infestation by the emerald ash borer.

"They will need to be chemically treated or cut down and removed," he said. "This will greatly reduce the city's forest canopy which residents cherish." ...